The Kubota M90 coolant capacity is listed as 3.12 gal (11.8 L). It also lists coolant type ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible and antifreeze mix 50/50 coolant and water mix.
Kubota M90 Coolant Capacity
| Coolant capacity | 3.12 gal (11.8 L) |
|---|---|
| Coolant type | ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible |
| Antifreeze mix | 50/50 coolant and water mix |
| Engine model | V3800 |
| Engine horsepower | 92.1 hp (68.7 kW) |
| Engine displacement | 4.7 L (286.8 cu in) |
Coolant Capacity Comparison Chart
Coolant capacity comparison
Engine horsepower comparison
Engine displacement comparison
Kubota M90 Coolant and Engine Notes
| Coolant capacity note | For service planning, the Kubota M90 should be treated as 3.12 gal (11.8 L) coolant capacity. That is a larger cooling system where you should buy extra coolant before draining it |
|---|---|
| Coolant type note | Use the right coolant formula for the Kubota M90: ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible. Cheap wrong coolant is not a smart saving if it causes corrosion or deposits |
| Antifreeze mix note | For the Kubota M90, the captured mix is 50/50 coolant and water mix. Straight water is not the right long-term answer unless you are only flushing the system |
| Engine context note | Engine context for the Kubota M90: engine model V3800, engine horsepower 92.1 hp (68.7 kW), and displacement 4.7 L (286.8 cu in). Engine size helps explain why coolant capacity changes between models |
| Refill note | Coolant changes are simple but easy to do sloppily. On the Kubota M90, plan around 3.12 gal (11.8 L) and confirm the final level after air works out of the system |
Kubota M90 Coolant Capacity FAQ
How much coolant does the Kubota M90 take?
The main coolant amount captured for the Kubota M90 is 3.12 gal (11.8 L). Buy a little extra so you can top up after the engine warms up and cools down.
Does coolant type matter on the Kubota M90?
Yes. Capacity tells you how much to buy; coolant type tells you what to buy. For the Kubota M90, the captured coolant type is ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible.
What antifreeze mix does the Kubota M90 use?
The captured antifreeze mix for the Kubota M90 is 50/50 coolant and water mix. A 50/50-style mix is the common practical answer unless your manual or climate calls for something different.
When should the Kubota M90 coolant be replaced?
Use the service interval in the operator manual as the service guide. Coolant can look okay but still lose corrosion protection over time.
What engine specs affect Kubota M90 coolant capacity?
The captured engine context is engine model V3800, horsepower 92.1 hp (68.7 kW), and displacement 4.7 L (286.8 cu in). Engine size is one reason coolant capacity changes between tractors.
Mistakes do happen. Tractor coolant specs can change by year, market, engine, radiator, cab/heater setup and service procedure. Please check the operator manual, decal information and official kubotausa.com website for official information before draining or refilling the cooling system.
